Lattice Semiconductor CertusPro-NX - Page 164

CertusPro-NX SerDes/PCS Usage Guide
Preliminary Technical Note
164 © 2020-2021 Lattice Semiconductor FPGA-TN-02245-0.81
All rights reserved. CONFIDENTIAL
Bit Rate
(Gbps)
Reference Clock
(MHz)
M
F
N
F
VCO
(MHz)
F
bit
(MHz)
F
PMA
(MHz)
Note
117.1875
1
2
2
16
7500
3750
234.375
PMA Only
117.1875
1
2
4
8
7500
3750
468.75
PMA Only
125
2
3
10
7500
3750
375
—
156.25
2
3
8
7500
3750
468.75
PMA Only
4
80
2
5
10
8000
4000
400
—
83.333
2
3
16
8000
4000
250
PMA Only
83.333
2
6
8
8000
4000
500
PMA Only
100
2
4
10
8000
4000
400
—
100
2
2
20
8000
4000
200
—
125
2
2
16
9216
4608
250
PMA Only
125
2
4
8
9216
4608
500
PMA Only
133.333
2
3
10
8000
4000
400
—
4.608
76.8
2
3
20
9216
4608
230.4
—
76.8
2
6
10
9216
4608
460.8
—
92.16
2
5
10
9216
4608
460.8
—
96
2
3
16
9216
4608
288
PMA Only
115.2
2
4
10
9216
4608
460.8
—
115.2
2
2
20
9216
4608
230.4
—
144
2
2
16
9216
4608
288
PMA Only
153.6
2
3
10
9216
4608
460.8
—
4.752
79.2
2
3
20
9504
4752
237.6
—
79.2
2
6
10
9504
4752
475.2
—
95.04
1
2
5
10
9504
4752
475.2
—
99
2
3
16
9504
4752
297
PMA Only
118.8
2
4
10
9504
4752
475.2
—
118.8
2
2
20
9504
4752
237.6
—
148.5
2
2
16
9504
4752
297
PMA Only
158.4
1
2
3
10
9504
4752
475.2
—
4.9152
81.92
2
3
20
9830.4
4915.2
245.76
—
98.304
1
2
5
10
9830.4
4915.2
491.52
—
102.4
2
3
16
9830.4
4915.2
307.2
PMA Only
122.88
2
4
10
9830.4
4915.2
491.52
—
122.88
2
2
20
9830.4
4915.2
245.76
—
153.6
2
2
16
9830.4
4915.2
307.2
PMA Only
5
78.125
2
4
16
10000
5000
312.5
PMA Only
83.333
2
6
10
10000
5000
500
—
83.333
2
3
20
10000
5000
250
—
100
2
5
10
10000
5000
500
—
104.166
2
3
16
10000
5000
312.5
PMA Only
125
2
2
20
10000
5000
250
—
125
2
4
10
10000
5000
500
—
156.25
2
2
16
10000
5000
312.5
PMA Only
5.4
84.375
1
1
4
16
5400
5400
337.5
PMA Only
90
1
3
20
5400
5400
270
—
108
1
5
10
5400
5400
540
Risk for 540MHz F
PMA
112.5
1
3
16
5400
5400
337.5
PMA Only
135
1
2
20
5400
5400
270
—